Photovoltaic module with non-porous back glass

Abstract

The utility model discloses a photovoltaic assembly with a hole-free back glass, which belongs to the design field of photovoltaic assemblies, and comprises battery pieces and bus bars, the battery pieces and the bus bars form a laminated piece through series welding and stitch welding according to a schematic circuit diagram, and outgoing lines are arranged on the side surfaces of the bus bars; covering upper glass and rear glass on the upper and lower parts of the laminated piece respectively; the bus bar lead-out wire is led out from the middle in the conventional mode, but the bus bar lead-out wire is led out from the side surface in the scheme, so that the rear glass is not required to be perforated. According to the utility model, the process of the middle hole of the rear glass is canceled, the risk of breaking the glass is reduced, the processing difficulty is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the design field of photovoltaic components, in particular to a photovoltaic component with a back glass without holes. Background Art

[0002] Distributed photovoltaics are mainly used on the roofs of industrial and commercial buildings, so the lighter the better without affecting the load-bearing capacity of photovoltaic modules. The largest weight of the module is glass, so everyone will start with the weight reduction of glass, from 2.0mm to 1.6mm.

[0003] Generally, there are three junction boxes in the middle of the back of the module, which are connected to the battery string through the busbar lead wire to form a photovoltaic module. Therefore, three holes need to be opened on the back glass, and the 1.6mm back glass will have defects such as hidden cracks after the hole is opened in the middle. Utility Model Content

[0004] In view of the technical defects existing in the above-mentioned prior art, the utility model discloses a photovoltaic module with a back glass without holes, which is proposed to solve the problem of hidden cracks caused by the hole in the middle of 1.6 glass.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A photovoltaic module with no holes in the back glass, the photovoltaic module includes: battery cells and bus bars, the battery cells and bus bars are welded in series and stacked to form a stack according to the circuit schematic diagram, and the wires are led out from the side of the bus bar; the stack is covered with upper glass and rear glass respectively; the conventional way of leading out the bus bar wires is to lead out from the middle, but this scheme changes it to lead out from the side, that is, the back glass opening is omitted. The stack is connected to the frame, and holes are machined on the side of the frame during processing to facilitate the lead-out of the wires through the side of the bus bar; the lead-out wires on the side of the bus bar are welded to the core column of the junction box base; the junction box base is bonded to the frame, and the junction box upper cover is covered on the junction box base, and cables are installed on the junction box upper cover, and the other ends of the cables connected to the junction box bases on the positive and negative sides are respectively connected to the negative terminal and the positive terminal to form a complete photovoltaic module.

[0007] Furthermore, the upper glass and the rear glass are covered on the upper and lower sides of the stacked component respectively, and the stacked component, the upper glass and the rear glass are bonded together by an adhesive film to form a laminated component.

[0008] Furthermore, the stacked components are connected to the frame via frame sealant.

[0009] Furthermore, the junction box base is bonded to the frame by means of silicone.

[0010] Furthermore, the length of the cable installed on the upper cover of the junction box can be customized according to requirements.

[0011] Furthermore, the junction box base and the junction box upper cover are bonded together by junction box silicone.

[0012] The beneficial effects of the utility model compared with the prior art are:

[0013] The utility model eliminates the process of the middle hole of the rear glass, reduces the risk of glass breakage, reduces processing difficulty and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of a photovoltaic module with no holes in the back glass;

[0015] Figure 2 A schematic diagram of the finished structure of a photovoltaic module with no holes in the back glass

[0016] Figure 3 A schematic diagram of a junction box cover in a photovoltaic module with a back glass without holes;

[0017] Figure 4 A schematic diagram of a junction box base in a photovoltaic module with no holes in the back glass;

[0018] Figure 5 The schematic diagram of the circuit in the base of the junction box in a photovoltaic module with no holes in the back glass;

[0019] Among them, 1-front glass, 2-film, 3-battery cell, 4-back glass, 5-frame, 6-frame sealant, 7-junction box silicone, 8-junction box cover, 9-junction box base, 10-cable, 11-negative terminal, 12-positive terminal, 13-bus bar. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the following examples are given to further illustrate the utility model in detail. It should be noted that the specific implementation described here is only used to explain the utility model, and is not used to limit the utility model.

[0021] like Figures 1 to 4 As shown, the utility model is a photovoltaic module with no holes in the back glass, including: a battery cell 3, a bus bar 13, and the battery cell 3 and the bus bar 13 are in accordance with the circuit principle diagram. In order to realize this scheme, the newly designed horizontal layout is changed from vertical to horizontal compared with the conventional component layout, and the three junction boxes are changed to two wire boxes. Two strings are connected in parallel to form a large string, and then the three large strings are connected in series (such as Figure 5As shown in the figure, the stacked parts are formed by series welding and stack welding, and the wires are led out from the side of the bus bar 13; the upper glass 1 and the rear glass 4 are covered on the upper and lower parts of the stacked parts respectively, and the stacked parts, the upper glass 1 and the rear glass 4 are adhered by the adhesive film 2 to form a laminated part; the conventional way of leading out the bus bar 13 is to lead out from the middle, but this scheme changes it to lead out from the side, that is, the rear glass opening is omitted. In this embodiment, the front glass 1 (1.6mm) and the back glass 2 (1.6mm) are used.

[0022] The stacked parts are connected to the frame 5, and the stacked parts are connected to the frame 5 through the frame sealant 6. When the frame 5 is processed, holes are processed on the side to facilitate the side lead-out of the bus bar 13; the side lead-out of the bus bar 13 is welded to the core column of the junction box base 9; the junction box base 9 is bonded to the frame 5 through silicone, and the junction box top cover 8 is covered on the junction box base 9. A cable 10 is installed on the junction box top cover 8. The length of the cable can be customized according to customer requirements. The other ends of the cables connected to the junction box base 9 on the positive and negative sides are respectively connected to the negative terminal 11 and the positive terminal 12 to form a complete photovoltaic module.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A photovoltaic module with no holes in the back glass, characterized in that: The photovoltaic module comprises: a battery cell (3) and a bus bar (13); the battery cell (3) and the bus bar (13) are connected to form a stacked component by series welding and stack welding according to a circuit schematic diagram, and the wires are connected to the side of the bus bar (13); the upper glass (1) and the rear glass (4) are respectively covered on the upper and lower parts of the stacked component; The stacked components are connected to the frame (5); holes are machined on the side of the frame (5) during processing, so as to facilitate the lead-out of the side of the busbar (13); the lead-out of the side of the busbar (13) is welded to the core column of the junction box base (9); the junction box base (9) is bonded to the frame (5), and a junction box upper cover (8) is placed on the junction box base (9); a cable (10) is installed on the junction box upper cover (8); the junction box base (9) is located on both sides of the positive and negative poles, and the other end of the cable connected to the junction box base (9) is respectively connected to the negative terminal (11) and the positive terminal (12), so as to form a complete photovoltaic module.

2. A photovoltaic module with no holes in the back glass according to claim 1, characterized in that: The upper glass (1) and the rear glass (4) are respectively covered on the upper and lower sides of the stacked component, and the stacked component, the upper glass (1) and the rear glass (4) are bonded together by an adhesive film (2) to form a laminated component.

3. The photovoltaic module with a back glass without holes according to claim 1, characterized in that: The stacked component is connected to the frame (5) via a frame sealant (6).

4. The photovoltaic module with a back glass without holes according to claim 1, characterized in that: The junction box base (9) is bonded to the frame (5) via silicone.

5. The photovoltaic module with a back glass without holes according to claim 1, characterized in that: The length of the cable (10) installed on the junction box upper cover (8) is customized according to requirements.

6. The photovoltaic module with a back glass without holes according to claim 1, characterized in that: The junction box base (9) and the junction box upper cover (8) are bonded together via the junction box silica gel (7).

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